Auxiliary air valve



'pi'l 13 1926.

J. P. SIMMONS AUXLIARY AIR VALVE Filed Jan. 3o, 1924 A TT'ORNE VS.

Patented Apr. 13, 1926.

j UNITED STATES JOHN P. SIMMONS; OF SAN FRANCISCO, CALIFORNIA; MERCANTILE TRUST COMPANY-v' PA'Uf-IN'A` OFFICE.'

OF CALIFORNIA EXECUTOR 0F SAID JOHN P. SIMMONS, DECEASED.

AUXILIA'RY AIR 'VALVE Application filed January 30, 1924. Serial' No. 689,507.

To all whom it may concern:

Be it known that I, JOHN P. SIMMONS, a citizen of the Unitedk States, residing at the city and county of San Francisco, and State of California, have invented new and useful Improvements in Auxiliary Air Valves, of which the following is a specification.

This invention relates to an internal combustion engine and particularly pertains to an auxiliary air valve therefor.

It has been found in practice that the operation of an internal combustion engine can be more efficiently performed when a direct variation in the proportion of air in the gaseous mixture is made under different speedand load conditions. With this idea in view it is the principal object of the present invention to provide means for permit.

ting a desired volume .of cold, fresh air directly to the gaseous mixture formed. in the carbureter and to deliver this fresh air with the gaseous vapors to the engine cylinder by means of a device which will automatically create a predetermined ratio of mixture between the fresh air and the gaseous fuel and which may be independently adjusted to meet the emergency demands for variations in the volume of fresh air required under extreme conditions.

Thev presentl invention contemplates the use of an auxiliary air valve communicating directly with the intake manifold of an internal combustion engine at a point between the caibureter and the engine, the said valve being automatically controlled by move` ment of the carbureter throttle valve and being capable of independent adjustment other than the automatic control.

The inventionis illustrated by way of example in the accompanying drawings, in whichz. v

Fig. 1 is a view in side elevation showing thel application of the present invention to an internal combustion engine. i

Fig. 2 is an enlarged view in end elevation showing the operating lever of the valve and the independent adjustable means there for. i

Fig. 3 is a view in central horizontal section through the valve showing the details of construction.

Referring more particularly to the drawing 10 indicates an internal combustion en` gine fitted wth an intake manifold 11 and a carbureter 12. The carbureter is provided with a throttle valve 13 whichl is controlled by a foot and hand'throttle mechanism of conventional design. fMounted upon the manifoldand in communication therewith is an auxiliary air valve 14: with which thc present invention is particularly concerned.

i This valve comprises a T-shaped casing 15 forming a valve seat 16 and a manifold connection 17 disposed at right angles to the valve seat 16. is formed with a cylindrical opening 18( extending for a distance therein. The opposite end of the member is substantially closed save for a smaller opening 19 through which lshaft 20 extends. This -shaft forms a part of a valve member 21. The valve member iscylindrical in shape andseats within the cylindrical bore of the valve casing 16. A center bore 22 is formed in the yvalve member from one end and thus makes the valve in the shape of an open-ended cup to which the valve shaft 20 is fastened. The side wall of this side member is formed with a .port 23 which may be brought4 to register with the opening 17 through the manifold connection.

It will be evident that by rotation of the i valve the port may be brought to vdifferent i degreesv of opening in combination withl the manifold connection 17, thus regulating the volume 'of air which may pass `in through the center bore of the valve and to the manifold. Rotation of the valve shaft 20 will The valve seat member 16y bring about this result and is accomplished the lever around its axis willl cause a unison movementof the gear 26 and the valve.

The vlever 24 is fitted with4 an arm 27 which is connected by a link 28 :with the' throttle'lever 13 of the carbureter so thatA lwhen the throttle valvejis regulated by the hand or foot throttle the auxiliary airf valveV willV also .be regulated automatically and will cause increasing amounts of cold, freshl air to be delivered to the 'manifoldand there mixed with thel gaseous fuel as the throttle valve is opened. In order to establish a proper ratio of action between the auxiliary air valve and the throttle valve the lever extension 27 is formed with a plurality of perforations by which the connection 28 may be secured, thus makingA it possible to select the maximum length` of stroke described by the lever andthe degreeV event this may be done in the present de*l vice by resetting the valve relative to they lever by which it is operated. This is accomplished by rotation of the valve independently of the lever. For this purpose a pinion 2f) meshes with` the gear 26. The

pinion is carriedzona shaft 30.]'ournalledin bearinO's on the lever 24. AA continuation ofVr the shaft 30 forms a lever 31 by. whichfthe shaft may` be rotated. This lever inturn may be operated fromthe dashoff the automobile by a connection 32.

In operation of the invention the auxiliary valve is applied tothe intake manifold at some point between the carbureter and theengine. The lever extension 27 is then connected by a member. 28` with the throttle and thelever.l extension 3lv is connected with the dash operating member 32. When the invention is in operation the throttle 13 will be actuated b'y either the hand or a footthrottle-control and at the sainetime member 28* will act to oscillate the lever andiproduce rotationofv the valve 21.,It is to beborne in mindithat the valve 21 is frictionally held against movement relative to the lever 24' by the valve spring, thus insuring that a direct movement will be imparted to the valve byactuation of the member 28. In the event, however, that it is desirable to promptly or temporarily change the setting of the valveport 23, the lever. extension 3l may be manipulated by the dash board control 32 to rotate the shaft 30 and the pinion29. axed thereto. This pinion will in turn rotate the valve gear 26 against the friction holding action of the valve spring 25 and will thus change the position of the valve member relative to the entire levery structure.

It willthus be evidentlthat by the present device an auxiliary supply of fresh, cool air mayl be directlyv'injected into the manifold of the engine to mix with the gaseous fuel passing from the carbureter to the engine cylinder. This air is'in a conditionv to expand greatly when within the cylinder and willinsure'thaty a higher compression will be obtained and that the gaseous fuel mixture will be automatically varied lto suit varying `conditions in the engine.'

While I havel shown the preferred form of my invention as now known to me, it will be understood that various changes might be made in the combination, construction and arrangement of parts by those skilled in the art, without departing from ythe spirit of the invention as claimed.

It will be further understood that the present invention is of great advantage not only in varyingA the ratio of fresh air and gaseous fuel passing to the engine cylinder, but making it possible to completely cut ol'i' the supply of gasoline to the carburetor by a manipulation ofthe throttle and to open the auxiliary valve to permit the cylinders to draw fresh air in directly through the manifold, this being a great saver of fuel whena-vehicle is coasting down a grade and the engine is in gear, to permit the cylinder compression to be used for braking purposes.

Having thus-described my invention what I claim'anddesire to secure by Letters Patentf is:

l'. An auxiliary valve member comprising a valve housing formed with an inductlon opening in one end thereof and an eduction portinthe sidethereof', a rotary valve member formedwitha passagewayl extending in from one end communicating with a port in the sidethereof, whereby air may pass in through the induction opening of the valve housing to the eduction port thereof, a valve leverI frictionally held with relation to the yalve and for. the rotation thereof, a gear fixed to the valve and an auxiliary gear in mesh with the valve gear whereby the valve may be adjustably rotated with relation to the lever.

2. An auxiliary valve member for. an internal combustion engine comprising a valve housingformed'with an eduction port in the side thereof, a rotary valve member mounted in the housing and'formed with an induction opening and with a port in the side thereof adapted toregister with the eduction port of the housing, whereby air may pass'in through the induction opening of the valve to the eduction port-Lof the valve housing,` a shaft on said valve member, a lever freelyv mounted thereon and adapted to be connected with the throttle control ofthe engine, a gearfsecured'to said shaftcontiguous to the lever, spring means frictionally holding said gear relative to the lever whereby operation of the lever will operate the valve, a pinion carried by the lever and in mesh with said gear, and means'for revolving said pinion to change the position of the `gear and consequently the valve relative to the lever.

JOI-INV P. SIMMONS. 

